The ITableMappingCollection interface allows an inheriting class to implement a TableMapping collection. For more information, see DataAdapter DataTable and DataColumn Mappings (ADO.NET).

An application does not create an instance of the ITableMappingCollection interface directly, but creates an instance of a class that inherits ITableMappingCollection.

Classes that inherit ITableMappingCollection must implement the inherited members, and typically define additional members to add provider-specific functionality. For example, the ITableMappingCollection interface defines one implementation of the RemoveAt method. In turn, the DataTableMappingCollection class inherits this method, and defines two additional overloads of RemoveAt.

When you inherit from the ITableMappingCollection interface, you should implement the following constructor:

The following example creates an instance of the derived class, DataTableMapping, and adds it to a DataTableMappingCollection collection. It then informs the user that the mapping was added to the collection.

Public Sub AddDataTableMapping()
    ' ...
    ' create tableMappings
    ' ...
    Dim mapping As New DataTableMapping( _
       "Categories", "DataCategories")
    tableMappings.Add(CType(mapping, Object))
    Console.WriteLine( _
       "Table {0} added to {1} table mapping collection.", _
       mapping.ToString(), tableMappings.ToString())
End Sub

public void AddDataTableMapping() 
{
    // ...
    // create tableMappings
    // ...
    DataTableMapping mapping =
        new DataTableMapping("Categories","DataCategories");
    tableMappings.Add((Object) mapping);
    Console.WriteLine("Table {0} added to {1} table mapping collection.",
        mapping.ToString(), tableMappings.ToString());
}

.NET Framework

.NET Framework Client Profile

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role not supported), Windows Server 2003 SP2

Reference

La interfaz ITableMappingCollection permite a una clase heredada implementar una colección TableMapping. Para obtener más información, vea Asignaciones DataAdapter, DataTable y DataColumn (ADO.NET).

Una aplicación no crea una instancia de la interfaz ITableMappingCollection directamente, sino que crea una instancia de una clase que hereda de ITableMappingCollection.

Las clases que heredan de ITableMappingCollection deben implementar los miembros heredados y suelen definir miembros adicionales para agregar la funcionalidad específica de proveedor. Por ejemplo, la interfaz ITableMappingCollection define una implementación del método RemoveAt. A su vez, la clase DataTableMappingCollection hereda este método y define dos sobrecargas adicionales de RemoveAt.

Al heredar de la interfaz ITableMappingCollection, se debe implementar el constructor siguiente:

En el ejemplo siguiente se crea una instancia de la clase derivada DataTableMapping y se agrega a una colección DataTableMappingCollection. A continuación, se informa al usuario de que se ha agregado la asignación a la colección.

Public Sub AddDataTableMapping()
    ' ...
    ' create tableMappings
    ' ...
    Dim mapping As New DataTableMapping( _
       "Categories", "DataCategories")
    tableMappings.Add(CType(mapping, Object))
    Console.WriteLine( _
       "Table {0} added to {1} table mapping collection.", _
       mapping.ToString(), tableMappings.ToString())
End Sub

public void AddDataTableMapping() 
{
    // ...
    // create tableMappings
    // ...
    DataTableMapping mapping =
        new DataTableMapping("Categories","DataCategories");
    tableMappings.Add((Object) mapping);
    Console.WriteLine("Table {0} added to {1} table mapping collection.",
        mapping.ToString(), tableMappings.ToString());
}

.NET Framework

.NET Framework Client Profile

Windows 7, Windows Vista SP1 o posterior, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (no se admite Server Core), Windows Server 2008 R2 (se admite Server Core con SP1 o posterior), Windows Server 2003 SP2

Referencia